During the excavation of a gallery in 2003 in the Tournemire argillite, a mine-by-test experiment has been performed, enabling measurements of pore pressure and displacements during the excavation (short term) as well as nearly three years after (long term). From these data, it has been possible, by means of bidimensionnal simulations, first to calibrate hydro-mechanical parameters, and then, u...

Research on argillite as a possible host rock for nuclear waste disposal is still an open subject since many issues need to be clarified. In the Underground Research Laboratories constructed for this purpose, a damaged zone around the excavation has been systematically observed and characterized by the appearance of micro-fissures. We analyse here -at nanoscale level- the calcite/clay assembly,...

During the long-term storage of radioactive waste, continuous generation gas in disposal area may influence integrity host rock. Thus, investigation migration and breakthrough low-permeability rock is indispensable for stability assessment. In this work, pore space models four potential rocks (Boom clay, COx argillite, Opalinus Beishan granite) were generated via binarization Gaussian random fi...

Graptolite–argillites (black shales) are studied as potential source of different metals. In the processing technologies graptolite–argillites, a preceding thermal treatment is often applied. this study, behavior Estonian graptolite–argillite (GA) samples from Toolse, Sillamäe and Pakri areas were using Setaram Labsys Evo 1600 thermoanalyzer coupled with Pfeiffer OmniStar Mass Spectrometer. The...

During long-term storage of radioactive waste, steel containers are corroded and this process leads to hydrogen production. An in-situ experiment has been designed by Andra, in order to analyze the influence of gas migration on the dynamics of resaturation of the bentonite plug. The competition between liquid water coming from argillite and a gas injection at both ends of the plug is studied. P...